BDSA Quantity Surveyors is a quantity surveying company. Quantity Surveyors providing service to the construction industry, property investors, financial corporations,s, and banks. Service provided tax depreciation reports, cost estimates, sinking funds, section 94a, insurance valuation, expert witness. http://www.bdsaqs.com.au. Servicing all areas: Sydney, Newcastle, Melbourne, Brisbane, Gold Coast, Townsville, Cairns, Darwin, Perth, Adelaide